package day02;

public class DoubleDemo {
    public static void main(String[] args) {
        double a = 3.14; //3.14为小数直接量，默认为double型
        float b = 3.14F; //3.14F为float型直接量

        double c=3.0,d=2.9;
        System.out.println(c-d); //0.10000000000000009
        double e=6.0,f=4.9;
        System.out.println(e-f); //1.0999999999999996
        double g=6.0,h=1.9;
        System.out.println(g=h); //1.9

    }
}
